For users on Linux and Unix, KDE offers a full suite of user workspace applications which allow interaction with these operating systems in a modern, graphical user interface. This includes Plasma Desktop, KDE's innovative and powerful desktop interface. Other workspace applications are included to aid with system configuration, running programs, or interacting with hardware devices. While the fully integrated KDE Workspaces are only available on Linux and Unix, some of these features are available on other platforms. In addition to the workspace, KDE produces a number of key applications such as the Konqueror Web browser, Dolphin file manager, and Kontact, the comprehensive personal information management suite. The list of applications includes many others, including those for education, multimedia, office productivity, networking, games, and much more. Most applications are available on all platforms supported by the KDE Development. KDE also brings to the forefront many innovations for application developers. An entire infrastructure has been designed and implemented to help programmers create robust and comprehensive applications in the most efficient manner, eliminating the complexity and tediousness of creating highly functional applications.

The SeaMonkey project is a community effort to develop an all-in-one Internet application suite. It contains an Internet browser, email and newsgroup client with an included Web feed reader, HTML editor, IRC chat, and Web development tools, and is sure to appeal to advanced users, Web developers, and corporate users. It uses much of the Mozilla source code powering such successful siblings as Firefox, Thunderbird, Camino, Sunbird, and Miro.

Thunderbird is a total redesign of the
Mozilla mail component to produce a
cross-platform, stand-alone mail application using
the XUL user interface language. It has many new
features, among them the ability to customize
your toolbars the way you want them. a new look
and feel with a large number of downloadable
themes which alter the appearance of the client,
and the ability to add UI extensions.

FCKeditor is an HTML/DHTML editor for ASP, ASP.NET, ColdFusion, PHP, and JavaScript that brings to the Web much of the powerful functionality of known desktop editors like Word. It's very lightweight, and doesn't require any kind of installation on the client computer.

TYPO3 CMS is a Web Content Management System which features automatic creation of navigational menus, headlines, and other dynamic graphical elements, automatic conversion and scaling of images, the ability to present different templates based on variables such as client browser or country code, support for multiple templates on a site, and a built-in password-protection option. Pages can be timed to be shown on a certain date, be hidden on a certain date or just temporarily hidden. TYPO3 supports search in SQL-databases and redesigning of a website at once is just a matter of creating a single new template.

Embedthis Appweb is a fast, little embedded Web server. It is unmatched in efficiency and serves pages at native speed, using an event-driven, non-blocking core to serve multiple requests using minimal resources. It has integrated caching and the ESP "C" Web framework. Without compromising performance, it has extensive security controls and a rigorous security sandbox that helps protect the server and mitigate denial-of-service attacks. It is one of the most widely deployed embedded Web servers and is used in networking equipment, telephony, mobile devices, industrial control, and consumer and office equipment, and in high-performance Web services.

LimeSurvey (formerly PHPSurveyor) is a Web
application that interacts with MySQL, MSSQL, or
Postgres to develop surveys, publish surveys, and
collect responses to surveys. Once a survey has
been created, data can be inserted into the survey
either by a "pretty" public screen which presents
each question one at a time, or by a quick and
nasty data entry screen. It includes the capacity
to generate individualized "tokens", so that
invitations can be issued to participants. It also
has the capacity to set conditions on whether
questions will display (branching), numerous
question types, and a basic statistics function.